Quickly respond to someone

There is no way to quickly respond to others. My suggestion is, that by clicking on the name, the user's name would appear into your typing box as - "$user: ".

Also, if you already started writing and click on user's name, user's name would still appear before the text you wrote, so you wouldn't need to first delete the message you wrote or click before your text, making it much faster to respond.

This could be also applied to the right users sidebar list.

And also great idea would be to add some text effects, when hovering over the user name inside the chat, not on the sidebar.